Transcend Information SSD25S User Manual
Page 11
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2.5” Solid State Disk
Transcend Information Inc.
V1.08
11
Figure 5 : comreset sequence
Description:
1. Host/device are powered and operating normally with some form of active communication.
2. Some condition in the host causes the host to issue COMRESET
3. Host releases COMRESET. Once the condition causing the COMRESET is released, the host releases the
COMRESET signal and puts the bus in a quiescent condition.
4. Device issues COMINIT – When the device detects the release of COMRESET, it responds with a COMINIT. This is
also the entry point if the device is late starting. The device may initiate communications at any time by issuing a COMINIT.
5. Host calibrates and issues a COMWAKE.
6. Device responds – The device detects the COMWAKE sequence on its RX pair and calibrates its transmitter (optional).
Following calibration the device sends a six burst COMWAKE sequence and then sends a continuous stream of the
ALIGN sequence starting at the device's highest supported speed. After ALIGNP Dwords have been sent